Sociedad Española de Montajes Industriales, S.A. - Grupo Semi - - Electrical engineering and consulting
Railway electrification: specialized in traction substations
Semi made electric traction substations, Rectifier substations of AC/DC power in a wide range of voltage of power supply and utilization, according to the values set by the various railway administrations.
The company develops projects such as power C.A, transformation, rectification and control feeders.
Classification of the main types of substations installed.